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Finding the Fourth Proportional to 389,713.69, 537,884.99 and 228,653.29

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Solution

The fourth proportional to 389,713.69, 537,884.99 and 228,653.29 is: 315,588.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,713.69 : 537,884.99 = 228,653.29 : x
  2. Step 2: Convert to fraction form
    389,713.69/537,884.99 = 228,653.29/x
  3. Step 3: Cross multiply
    389,713.69x = 537,884.99 × 228,653.29
  4. Step 4: Simplify right side
    389,713.69x = 122,989,172,605.12
  5. Step 5: Solve for x
    x = 122,989,172,605.12/389,713.69
  6. Step 6: Final answer
    x = 315,588.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.